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Double immunofluorescence staining of CD133 and 8-oxodG in normal esophageal (Normal), Barrett's esophageal (BE), and Barrett's esophageal adenocarcinoma (BEA) tissues. CD133 and 8-oxodG were stained in red and green, respectively. The original magnification is ×200 (a). (b) represent enlarged pictures of the yellow boxes in the (a). Arrowheads indicate CD133 expression in apical surface. Arrows indicate cell membrane and cytoplasmic CD133 staining.
